Which one of the following aqueous solutions will exhibit highest boiling point?
Which one of the following aqueous solutions will exhibit highest boiling point?
$0.01 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4$
$0.015 \mathrm{M}$ glucose
$0.015 \mathrm{M}$ urea
$0.01 \mathrm{M} \mathrm{KNO}_3$
Solution
Von't Hoffs factor (i) for $\mathrm{Na}_2 \mathrm{SO}_4$ is maximum i.e. 3( maximum no of particles)
$
\mathrm{Na}_2 \mathrm{SO}_4 \longrightarrow 2 \mathrm{Na}^{+}+\mathrm{SO}_4^{-}
$